The Omega DeVille Co-axial —
Imagine that all cars used the same kind of engine. Now imagine that engine had been invented in England in the 1750s. That's where we are, mostly, with watchmaking today -- every mechanical watch in existence has a device in it that is responsible for actually keeping time, called the escapement; and in virtually every mechanical watch in existence, it's a type of escapement called the lever escapement.
The exception: Omega, which makes extensive use of an escapement known as the co-axial, and which was invented by the famous English watchmaker Dr. George Daniels.
In breaking the stranglehold of the lever escapement on watchmaking with the release of the first co-axial wristwatch, in 1999, Omega showed a new generation of watch enthusiasts, and watchmakers, that tradition needn't be a straitjacket -- even in the most apparently immutable part of all.